無錫市ag环亚娱乐平台干燥設備有限公司主營︰环亚APP下载熱風爐|ag88环亚娱乐燃氣熱風爐|直接式环亚APP下载熱風爐
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环亚APP下载熱風爐煤質究竟該怎樣掌控

 

煤質的重要性,环亚ag旗舰厅都知道的煤質一般的要求不是那麼的嚴格,但是不是要求不嚴格就沒有要求,大部分臥室鏈條爐都是二類,三類煙煤。燃燒的時候也會出現煤燃燒不完全等故障,這就是煤質沒有把握好,究竟該怎樣掌控?环亚APP下载在使用的時候煤質量的好壞,直接影響的燃燒效率,所以在選煤的時候就要注意這幾點了,首先要保持干燥,從爐型情況分析,層燃爐、室燃爐爐型對煤炭的揮發分要求更為嚴格;旋風爐、沸騰爐和循環流化床對煤種要求較為寬松,可選用煤炭的揮發分區間較大,煤種適應性強,特別是近幾年新建的循環流化床,對揮發分要求較為寬松。在使用煤粉燃燒的中,入爐前對煤粉要經過干燥處理,以減少水分對發電燃燒帶來的影響,因為煤的水分升高發熱量降低,排煙溫度升高,影響發電熱風爐的燃燒效率。再者煤種含有硫,燃燒後生成s02和s03,它們極易與煙氣中的水蒸氣化合成H2S04蒸氣,對發電設備產生腐蝕作用。

The importance of coal quality in coal-fired hot-blast stoves, we all know that the general requirements of coal quality in coal-fired hot-blast stoves are not so strict, but there are no requirements if the requirements are not strict. Most bedroom chain stoves are of type II and type III bituminous coal. When burning, faults such as incomplete combustion of coal will also occur. That is, the quality of coal is not assured. How to control it? The quality of coal in the use of coal-fired hot-blast stove directly affects the combustion efficiency of hot-blast stove, so we should pay attention to these points when preparing coal. First of all, we should keep dry. From the analysis of furnace type, the requirements for volatile components of coal are more stringent for layer-fired stove and chamber-fired stove; cyclone stove, fluidized-bed stove and circulating fluidized bed. The requirement of coal type for hot-blast stove is relatively loose, the volatilization zones of coal selected are relatively large, and the adaptability of coal type is strong. Especially for the newly built circulating fluidized bed hot-blast stove in recent years, the requirement of volatilization is relatively loose. In the hot-blast stove using pulverized coal combustion, the pulverized coal must be dried before entering the stove to reduce the influence of moisture on the combustion of the power generation hot-blast stove. The combustion efficiency of the power generation hot-blast stove is affected by the increase of the moisture content of coal and the decrease of the calorific value and the increase of the exhaust gas temperature of the hot-blast stove. Moreover, the coal contains sulfur, which produces S02 and S03 after combustion. They are very easy to synthesize H2S04 vapor with water vaporization in flue gas, which has a corrosive effect on power generation equipment. 煤的發熱量低于設計指標,爐內溫度水平降低,影響煤粉的燃點和燃。 確緶 刃 氏陸,當發熱量低到一定程度時將引起燃燒不穩,滅火放炮,以及必須投油助燃,煤的發熱量高于設計水平,爐膛溫度必然升高,煤灰大多軟化、熔融,容易形成結渣。

The calorific value of coal is lower than the design index, the temperature level in the furnace decreases, which affects the burning point and burnout of pulverized coal, and the thermal efficiency of hot blast stove decreases. When the calorific value reaches a certain level, it will cause combustion instability, fire extinguishing and firing, as well as the need to throw oil to assist combustion. The calorific value of coal is higher than the design level, the furnace temperature will inevitably rise, and most of coal ash It is easy to form slagging by softening and melting.

环亚APP下载熱風爐在使用的時候,如果燃料的水分過大,那麼在燃燒的時候效率就會大大的降低。首先讓燃料燃燒,至少要達到他的燃燒點,但是如果有水分的話,那麼就會大大增加加熱的時間,在這水分的蒸發在經過管道的時候,就會出現有水珠的生成,那麼就會是管道出現腐蝕的現象,這樣熱風爐的壽命就會受到影響。

When the coal-fired hot blast stove is in use, if the moisture content of the fuel is too large, the efficiency of combustion will be greatly reduced. First let the fuel burn, at least to reach its burning point, but if there is water, then it will greatly increase the heating time, when the evaporation of water through the pipeline, there will be the formation of water droplets, then the pipeline will be corroded, so the life of the hot blast stove will be affected.


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